Gas burner



April 4, 1967 A. R. PAssARl-:LLO 3,312,267

` @As BURNER Filed Jan. 15, 1964 2 Sheets-Sheet 1 INVENTOR.

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GAS BURNER l l2 Sheets-Sheet 2 Filed Jan. 13, 1964 INVENTOR BY Z g;

grraR/VE/S United States Patent O 3,312,267 GAS BURNER Anthony R. Passarelio, Bellevue, Ohio, assigner to Johnson Corporation, a corporation of Ohio Filed Jan. 13, 1964, Ser. No. 337,309 1 Claim. (Cl. 158-99) This invention relates to improvements in a gas burner and in a novel method for making the major portion of the gas burner body from a single blank.

One of the objects of the present invention is to provide an elongated gas burner having imperforate parallel side walls and a bottom and top enclosing a hollowI tubular chamber having one end closed and the other end open to permit the introduction of gas and air there, together with a plurality of parallel upstanding hollow ribs' extending longitudinally along the major portion of the length of the chamber and communicating with the chamber along substantially the entire length of the ribs. There are a plurality of burner jet openings spaced along each of those ribs at the highest crest thereof and providing communication between the hollow of each of the ribs and atmosphere.

Another object of the invention is to provide a method of making the major -portion of such a gas burner body including the side wall, top wall and ribs starting with a generally rectangular flat sheet in which are formed two parallel rows of holes intermediate and Parallel to opposite sides of the rectangle, such holes eventually becoming the burner jets. The sides of this blank laterally outside fot' the rows of holes are bent downwardly at 90 to provide the side walls of the burner body and the sheet between the rows of holes is formed in a U-shape section opening upwardly with the bottom of the U-shape lying at right angles to the side walls providing a top for the burner body and the parallel sides of the U-shape extending upwardly from this top portion and being of less vertical dimension than the side walls and parallel to the latter so as t provide the hollow ribs having the above mentioned rows of holes located along the crests of the ribs.

Other objects and advantages of the invention include various details of the arrangement of the parts, all as set forth in the specication and drawings, and the essential features of the invention will be summarized in the claim.

In the drawings,

FIG. 1 is top pian view of a burner embodying this invention;

FIG. 2 is a side elevational view of the same with a portion at the right-hand end broken away in section to more clearly show the construction;

FIG. 3 is a sectional view taken along the line 3 3 of FIG. l;

FIG. 4 is a t-op plan view of a sheet metal blank from which the major portion of the gas burner body of FIGS. l, 2 and 3 may be formed;

FIG. 5 is an enlarged fragmental View taken at the right-hand end of FIG, 2 and illustrating the position of a gas jet when the burner is in use; while FIG. 6 is a sectional view taken along the line 6 6 of FIG. 2.

Referring now to the drawings, a preferred form of this invention is made from a single generally rectangular sheet metal blank 10 as shown in FIG. 4 having parallel rows 11 of holes spaced inwardly from the sides of the blank and extending parallel to the opposite sides of the blank. In the finished burner, with reference to FIG. 3, the openings 11 through which the gas and air eventually burn are indicated at the top of the hollow ribs 12. Also referring to FIG. 3, the sides of the blank laterally outside of the rows of holes 11 are bent downwardly at right angles to form a pair of imperforate planar parallel side 3,312,267 Patented Apr. 4, 1967 "ice walls 13. The metal between the rows of holes 11 is bent in generally U-form as shown in FIG. 3 wherein the bottom of the U-section indicated at 14 provides an elongated imperorate top for the burner body. The parallel sides 15 of the U-shape are of less vertical dimension than the side walls 13 and are parallel to the latter so as to provide the hollow ribs 12 having the rows of holes 11 located along the crests of these ribs and communicating with the hollow yof the ribs through their entire length.

Means is provided to close the bottom of the hollow burner body and one end thereof. In the drawings this is shown as a single piece of metal 16 having its major portion parallel to the top 14 as clearly seen in FIG. 3 and having downwardly extending U-shape anges 17 at each side thereof, these flanges opening upwardly to receive the bottoms of the side walls 13 as clearly shown in FIG. 3. Referring to FIGS. l and 2, the left-hand end of the sheet 16 is bent upwardly at 16a and extends up to the upper level of the ribs 12 where it abutsflatly against an upturned lip 14a which is part of the top sheet 14. The outer porti-ons of U-shape lianges 17 are cut away from 17a toward the left as viewed in FIGS. 1 and 2 Awhile the inner portion of these anges 17b are continued around the curved left end of the burner side walls lying parallel thereto and flat against them as indicated in FIG. l at 17b. The sheets 16 with flanges 17 and parts 14a and 16a are secured together rigidly as by welding or the like.

The right-hand end of the gas burner body as seen in FIGS. l, 2 and 5 is open to permit the introduction of gas under pressure there. Suitable means is provided for receiving and positioning a gas jet at this end of the body. A suitable form of such device comprises an end portion of the top sheet 14 which is bent downwardly at 1411 and provided with a notch 14C to properly position a gas jet. This notch is seen at the lower portion of the blank shown in FIG. 4. In' FIG. 5 is shown a pipe 18 for the supfly of gas under pressure and having a jet 19 extending laterally therefrom to introduce gas lengthwise of the hollow burner chamber 20.

A simple but novel means is provided for controlling the amount of air entering at the open end of the burner body to mix with the gas from the jet 19. This comprises a generally U-shape sleeve member 21 slidable longitudinally in the burner body. This member has a bottom 21a slidable along the bottom 16 of the burner body. Upstanding parallel sides 2lb lie flat against the inner sides -of the side walls 13 and extend upwardly as indicated at 21C into the hollows of the ribs 12. A downturned lip 21d provides easy manipulation of the member 21 as it is slid longitudinally intov and out of the burner body. It will be noted that the side walls are cut away at 13a to permit the entry of air alongside the gas jet 19 depending upon the position of the slide 21.

It will be noted in FIGS. 1, 2 and 4 that the burner openings 11 extend along a major portion of the length of the hollow gas burner body but a minor portion as indicated at 22 is imperforate to provide a mixing chamber.

The operation of this gas burner in use should now be apparent. With gas being introduced at the jet 19 under pressure, the slide 21 is adjusted longitudinally so that when it closely surrounds the jet 19 a smaller amount lof air is introduced and when the slide 21 is farther away from the jet 19 or toward the left as viewed in FIG. 5, then a greater amount of air is introduced in proportion to the gas. The imperforate portion 22 of the hollow body permits a thorough mixing of the gas and air before it reaches the burner openings 11. Reference to FIG. 3 will show that the cross sectional area of the hollow chamber 20 in the main portion of the burner 3 body is many times the area of the hollow ribs 12. I prefer that the cross sectional area of the main body 20 be at least ten to twenty times the cross sectional area of the ribs 12 depending upon the total length of the burner. It results from this construction that there is such a large body of mixed gas and air in the main chamber 20 that the smaller hollow rib areas 12 are evenly supplied along the entire length of the burner with an evenly mixed blending of gas and air.

In one form of my invention wherein the entire burner is about twenty-one inches long, the chamber 20 is about 11/4 inches wide by one inch deep and the hollow ribs 12 are about 1/16 inch wide in internal dimension by about inch in vertical dimension. In this embodiment there are twenty-one of the openings 11 along each rib and each opening is about 1/2 inch long with the connecting metal 23 separating adjacent burner openings being about 5/32 inch long. These dimensions are given not in limitation of the invention but merely to illustrate a successful embodiment of the same.

What is claimed is:

A gas burner body comprising a unitary sheet of metal providing an elongated planar rst side wall, said sheet bent back upon itself approximately 180 at the top of the burner body to provide a hollow narrow rib of less depth than said side wall, said sheet then bent away from said side wall and rib at approximately 90" to provide a top wall for said body, said sheet then bent upwardly at approximately 90 and then bent back upon itself approximately 180 to provide a second hollow narrow rib, said sheet extending downwardly from said second rib to form an elongated planar second side wall parallel to and coextensive with said irst side wall, means closing the bottom and one end of said body, there being a plurality of burner jet openings through the crests of said ribs, said body having an open end, a portion of said side Walls and of said bottom closing means cut away adjacent said open end, and a U-shaped sleeve slidable in said open end, said sleeve having a bottom adapted to slide along the upper surface of said bottom closing means and having opstanding parallel walls adapted to lie inside of said body side walls and to extend slidably into said ribs, whereby said sleeve may regulate the amount of air entering said body when a gas jet is inserted into said open end.

References Cited by the Examiner UNITED STATES PATENTS 1,096,426 5/1914 Geurink 158-99 1,977,947 10/1934 Lentenbacher 158-118 X 2,044,528 6/1936 Guhl 113-116 2,255,636 9/1941 Wittmann 158-99 2,348,011 5/1944 Koppel 158-116 X FOREIGN PATENTS 10,035 8/1885 Great Britain. 310,580 8/1933 Italy.

FREDERICK L. MATTESON, I R., Primary Examiner. 

